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Armchair scientist? 1337 h4x0r? Discuss the sciences, technology trends, or even get some computer support.enMon, 19 Mar 2018 14:12:42 GMTvBulletin60http://www.bluelight.org/vb/images/aria/misc/rss.pnghttp://www.bluelight.org/vb/
Want to build a small drum pad that can trigger short mp3 fileshttp://www.bluelight.org/vb/threads/841824-Want-to-build-a-small-drum-pad-that-can-trigger-short-mp3-files?goto=newpost
Thu, 15 Mar 2018 09:51:26 GMTI am seeking to build a small drum pad that can trigger short mp3 files. Here there are a lot of specifications and I don't expect to have everything explained, but any tips on how to go about making this, what IC's to use especially, or any general help and explanation would be greatly appreciated,Thank You. -Kevin

Basically the goal is to have eight buttons that will each play a short mp3 clip when pressed.
More things that would be good are:

Press more than one at the same time

A bank selector switch that lets you chose between different sets of mp3's that will be played when each pad is pressed.

The ability to download mp3s to each pad and change what each pad will play.

A Looper to let you record short loops, play them back, and overdub (record over the last recording)

Rechargeable battery (via USB) with low battery LED indicator.

Again, I realize that these are ideals, and also that it might be easier to create a custom IC to fit the needs (If anyone knows about where and how I could do that please point me in that direction by the way). But please give me some general direction or outline of how I should go about this, and any tips that might be helpful. Here is my best attempt at a general schematic of my idea. Feel free to dismiss if it is incorrect or unfeasible. Thanks again!

I found a great chip that I think might work for my purposes,the ATTINY861-20pu in kynix. I found a project that Plays WAV files off of an SD card. Any Ideas on how to better integrate this chip with the features above? Heres the Project: http://elm-chan.org/works/sd20p/report.html

Drew out a block diagram for a circuit with the Atiny 861, I'm just encoding each pad to binary to control the triggers on the Atiny, whitch plays .wav files from the SD card to the Headphone Amp(LM4910). The bank switch just shifts the binary number up to where I will place a different set of samples on the SD card to be accessed. ----- Problems: Can't press more than one pad at once? How do I load the firmware to the AVR? Will the higher powered PWM output ruin the Headphone amp? Haven't gotten to the looper part yet. Any help or criticism greatly appreciated!

Story highlights93% of Scott Kelly's genetic expression returned to normal once he returned to EarthHowever, a subset of several hundred "space genes" remained disruptedSpending a year in space not only changes your outlook, it transforms your genes.Preliminary results from NASA's Twins Study reveal that 7% of astronaut Scott Kelly's genes did not return to normal after his return to Earth two years ago.The study looks at what happened to Kelly before, during and after he spent one year aboard the International Space Station through an extensive comparison with his identical twin, Mark, who remained on Earth.NASA has learned that the formerly identical twins are no longer genetically the same.'Space genes'The transformation of 7% of Scott's DNA suggests longer-term changes in genes related to at least five biological pathways and functions.The newest preliminary results from this unique study of Scott, now retired from NASA, were released at the 2018 Investigator's Workshop for NASA's Human Research Program in January. Last year, NASA published its first round of preliminary results at the 2017 Investigator's Workshop. Overall, the 2018 findings corroborated those from 2017, with some additions.To track physical changes caused by time in space, scientists measured Scott's metabolites (necessary for maintaining life), cytokines (secreted by immune system cells) and proteins (workhorses within each cell) before, during and after his mission. The researchers learned that spaceflight is associated with oxygen-deprivation stress, increased inflammation and dramatic nutrient shifts that affect gene expression.In particular, Chris Mason of Weill Cornell Medicine reported on the activation of Scott's "space genes" while confirming the results of his separate NASA study, published last year.To better understand the genetic dynamics of each twin, Mason and his team focused on chemical changes in RNA and DNA. Whole-genome sequencing revealed that each twin has more than expected unique mutations in his genome -- in fact, hundreds.Although 93% of Scott's genetic expression returned to normal once he returned to Earth, a subset of several hundred "space genes" remained disrupted. Some of these mutations, found only after spaceflight, are thought to be caused by the stresses of space travel.As genes turn on and off, change in the function of cells may occur.Looking to MarsMason's work shows that one of the most important changes to Scott's cells was hypoxia, or a deficient amount of tissue oxygenation, probably due to a lack of oxygen and high levels of carbon dioxide. Possible damage to mitochondria, the "power plants of cells," also occurred in Scott's cells, as indicated by mitochondrial stress and increased levels of mitochondria in the blood.Mason's team also saw changes in the length of Scott's telomeres, caps at the end of chromosomes that are considered a marker of biological aging. First, there was a significant increase in average length while he was in space, and then there was a decrease in length within about 48 hours of his landing on Earth that stabilized to nearly preflight levels. Scientists believe that these telomere changes, along with the DNA damage and DNA repair measured in Scott's cells, were caused by both radiation and calorie restrictions.Additionally, the team found changes in Scott's collagen, blood clotting and bone formation due, most likely, to fluid shifts and zero gravity. The researchers discovered hyperactive immune activity as well, thought to be the result of his radically different environment: space.The Twins Study helps NASA gain insight into what happens to the human body in space beyond the usual six-month International Space Station missions previously studied in other astronauts. Ten groups of researchers, including Mason's team, are looking at a wide variety of information about the Kelly twins' health, including how gut bacteria, bones and the immune system might be affected by living off planet.Kelly's one-year mission is a scientific stepping stone to a planned three-year mission to Mars, NASA said. Research into how the human body adjusts to weightlessness, isolation, radiation and the stress of long-duration spaceflight is needed before astronauts are sent on journeys that would triple the time humans have spent in space so far.

Not the most well-written of articles, but interesting implications.
]]>cduggleshttp://www.bluelight.org/vb/threads/841811-NASA-compares-DNA-of-identical-twins-after-one-is-in-outer-spaceRIP Stephen Hawking :(http://www.bluelight.org/vb/threads/841771-RIP-Stephen-Hawking-(?goto=newpost
Wed, 14 Mar 2018 05:56:21 GMT---Quote---
Stephen Hawking, the Cambridge University physicist and best-selling author who roamed the cosmos from a wheelchair, pondering the...

Quote:

Stephen Hawking, the Cambridge University physicist and best-selling author who roamed the cosmos from a wheelchair, pondering the nature of gravity and the origin of the universe and becoming an emblem of human determination and curiosity, has died at his home in Cambridge, England. He was 76.

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"Not since Albert Einstein has a scientist so captured the public imagination and endeared himself to tens of millions of people around the world,? Michio Kaku, a professor of theoretical physics at the City University of New York, said in an interview.
Dr. Hawking did that largely through his book ?A Brief History of Time: From the Big Bang to Black Holes,? published in 1988. It has sold more than 10 million copies and inspired a documentary film by Errol Morris. The 2014 film about his life, ?The Theory of Everything,? was nominated for several Academy Awards and Eddie Redmayne, who played Dr. Hawking, won the best-actor Oscar.

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Scientifically, Dr. Hawking will be best remembered for a discovery so strange that it might be expressed in the form of a Zen koan: When is a black hole not black? When it explodes.
What is equally amazing is that he had a career at all. As a graduate student in 1963, he learned he had amyotrophic lateral sclerosis, a neuromuscular wasting disease also known as Lou Gehrig?s disease. He was given only a few years to live.
The disease reduced his bodily control to the flexing of a finger and voluntary eye movements but left his mental faculties untouched.
He went on to become his generation?s leader in exploring gravity and the properties of black holes, the bottomless gravitational pits so deep and dense that not even light can escape them.

Besides his unusual appearance due to illness I really learned a lot from this guy, really opened my eyes about space and what's really out there beyond the stars. Am really sad to hear about his passing, I know he has helped inspire tons of other scientist out there alike.
]]>http://www.bluelight.org/vb/threads/841771-RIP-Stephen-Hawking-(Hololens, Magic Leap and mixed reality GADGETS just fads at the moment?http://www.bluelight.org/vb/threads/841032-Hololens-Magic-Leap-and-mixed-reality-GADGETS-just-fads-at-the-moment?goto=newpost
Thu, 01 Mar 2018 18:43:53 GMTHi all, What you think of devices like the Hololens or Magic leap or mixed reality other gadgets, are they too early and expensive at the moment and...Hi all, What you think of devices like the Hololens or Magic leap or mixed reality other gadgets, are they too early and expensive at the moment and are just fads, how are they going to be useful, I find just plastering 2D or 3D images in front of your eyes onto real world nothing special or exciting and will be bored in 20mins as I am with my VR smartphone device. What?s the killer app or device that?s going to bring us to 2020 and future? Ideally I?d like to see a full 5sense reality device direct to brain wirelessly that gives me full on sex love porn vr hehe. You tried any of these devices? What you think?

somebody trained a neural network to write passages of text like Finnegan's Wake

the question though - if it's made by a computer and humans and computers ARE different, is there some sort of ROBOT PRESENCE in the computer-generated text, somewhere in the sequence of words/choices of words

any opinions?
]]>DJ Saint-Huberthttp://www.bluelight.org/vb/threads/840876-Using-the-Cayley-Dickson-Construction-for-Generation-of-music-MIDI-4-mind-expansionAre Apple going to do something innovative again?http://www.bluelight.org/vb/threads/840728-Are-Apple-going-to-do-something-innovative-again?goto=newpost
Sun, 25 Feb 2018 09:38:47 GMTHi all, it seems Apple have been a bit lacking lately, when?s the next innovation? I heard they are going to do Apple I glasses and get into...Hi all, it seems Apple have been a bit lacking lately, when?s the next innovation? I heard they are going to do Apple I glasses and get into augmented reality like Google?s magic leap and doing another operating system called Ros or reality os for long? What?s the future of Apple?
]]>Markomarkhhttp://www.bluelight.org/vb/threads/840728-Are-Apple-going-to-do-something-innovative-againBT broadband needs improving!?http://www.bluelight.org/vb/threads/840438-BT-broadband-needs-improving!?goto=newpost
Wed, 21 Feb 2018 15:11:19 GMTWell I live outside of town, almost in the countryside, is my broadband speeds or BT ment to be useless? 23.42mbps is my download and 1.28mbps is my...Well I live outside of town, almost in the countryside, is my broadband speeds or BT ment to be useless? 23.42mbps is my download and 1.28mbps is my upload? The download is not bad for casual internet and YouTube videos but for uploads it?s useless! How do I write to BT or what is their email tech support, can it be improved? Or is it worth going to another provider? Like sky broadband or something?